The person who designed Blackstar is Jonathan Barnbrook. His company is called Barnbrook. On their site you can see all of the David Bowie album art they designed, except for Blackstar; Blackstar is not on their site.
Look! In November 26, 2015 Creative Review did an article about Blackstar’s design.
In case you didn’t know, this is Bowie’s name:
Have you seen this site? imablackstar Whoa!
Also, in case you haven’t seen, look at this Tumblr account called The Villa of Ormen. At first many people thought David Bowie created this account, but turns out he didn’t because the real owner of the site put up a new post saying, “I am not David. This is not David’s account.”
Where is the photographer Jimmy King who took the last formal portraits of Bowie? Still can’t find out anything about him in the Internet! Would love to know the dates these photos were shot.